Computing weighing apparatus.



H. A. CARPENTER L A. WARNER.

CCHVIPUTING WEIGHING APPARATUS.

APPLICATION FILED IuLv Io, |914.

Patented 060.12, 1915..)

SHEEIS-SIIEEI I.

FIGJ.

y INVENTORS g/ l 7 0 H. A. CARPENTER & A. W. WARNER.

COMPUTING WETGHING APPARATUS.

APPLICATION FILED JULY l0 l94.

Patened Oct. 12, T915.

INVENTORS N @mili EJ WTTNESSES Y f-mdy H. A. CARPENTER Q A. W. WARNER.

commune wmmma APPARATUS. n

APPLICATION FILED JULY l0, 1914.

Patented Oct. 12, 1915.

3 SHEETS--SHEEY 3.

FIGS. Se J0 UNITED sTATEs PATENT oEEicE.

HENRY A. CARPENTER AND ARTHUR W. WARNER, OF SIEIWICKLEY, PENNSYLVANIA, ASSIGNORS T0 RITER- CQNLEY MANUFACTURING COMPANY, OF PITTSBURGH,

PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

COMPUTING WEIGHING ABPARATUS.

To all 'whom it may concern:

Be it known thatA we, HENRYVA. CAR- PENTER and ARTHUR W. WARNER, citizens of the United States, residing at Sewickley, in the vcounty o- -Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Computing Weighing Apparatus, of which the following is a specification. v Our present invention relatesto improvements in computing weighing apparatus relating more particularly to apparatus in which `loads of considerable ,bullr are accu-` ratelyweigh'ed, registered, and, if desired,

In weighing operations, and especially Where the load is of large bulk, as for instance, the charge for the retorts of a gas bench, it is essential that a record of the weighing operations be obtained and in such form asto enable the net weight of a charge to be`readily determined. Heretofore this has generally been provided by clerical worst of the scale operator, upon whose careful work and attention the accuracy of the record depends. l In making these records it is generally the practice to record both gross and tare weights from which calculations must be made to ascertain the weight of the individual-,charge and of the totality of charges for the day.

The present invention is designed for the purpose of eliminating the human element as much as possible, thereby insuring a cor- .rect and complete record of the material which isvactually used.

lAmong they objects of our invention are.:

(a.) To provide a weighing apparatus in which the movements of the weight are controlled from a single point which may, if desired, 'be removed from the balancing mechanism. (Z1) To provide apparatus of this type in which the tripping mechanism for controlling the movements of the weight in only th in opposite, directions will bel limited to render the mechanism active to move the weight proper" direction, the tripping ,mechanism being locked against action which woutl move the'weight in the improper direcgirpln. (c) To provide a weighin which the movement of the weight fay be had with rapidity, but which will be substantially free from overrunning, th relay providing .for accurate Specification of Letters Patent.

Patented Oct. 12, 1915.

Application filed July 10, 1914. Serial No. 850,209.

these operations being controlled from va single point. (e) To provide apparatus of this character in which the balancing movements of the Weight provide net weight registration, and in which these registrations may be recorded to visually indicate succes- Sive accumulative weights and, if desired, the particular time at which the net weight record is made. Y

. Other and further objects are to provide apparatus of this character which is simple and efficient in operatic/n, substantially automatic, which prevent'computation errors,

*and in which the labor is reduced to a minil mum.

" To these and other ends,.the nature of which will be readily understood as the invention is hereinafter disclosed, said invention consists of the improved construction andcombination of parts hereinafter fully described, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims.

In the accompanying drawings, in which similar reference characters indicate similar parts in each of the views, Figure'l is a diagrammatic view showmgthe general arrangement of portions of the apparatus employed in producing the desired result according to the present invention; Fig. 2 is a vertical section taken through a simple lform of -switch mechanism which may be employed for. the purpose of ,carrying out the invention; Fig. 3 is a top plan view, partly broken away, of a scale beam structurewhich may be employed; Fig. 4 isa view partly in side elevation and partly in section of the structure of Fig'. 3; Fig. 5` is a sectional view/taken on the line 5-5 of Fig. 4; Fig. 6 is 4a sectional View taken on theline 6-6 'of Fig. 5; Fig. 7 is a detail sectional View of the lratchet mechanism for operating the counter; and Fig. 8 vis a sectionalview taken on the lineS-S of Fig. 7. f

Referring more particularly to Fig. 1, A indicates a sc'ale beam operatively connected to'the platforinlaaofa scale; the scalebeam in this View. is shown simply in diagrainmatic form, a preferred structure thereof being shown in Figs. 3 to 8 inclusive; the showing ot' Fig. 1, however, will be suiiicient to illustrate the general weighing op era-tion. l

B represents diagraiiiinatically a switch mechanism which may be employed, Fig. 2 showing a simple form ot mechanism ior Ithis purpose.

10 designates a shaft carrying a control-A ling member 11 provided with shoulders 11, 11b, 12 and 12", the shaft being adapted to be oscillated by nieans of a handle 1&3, the latter being held in a normal intermediate position by means ot' springs 1.-1.

15, 15, 15b and 15" designate movable conductors for the purpose of making; and breaking certain circuits presently described, these conductors, Jor the purpose of illustration, being shown as plates or strips attached to an insulating carrier 16 inounted onthe shaft 10 (Fig. 2), these conductors being adapted to be moved in unison with 'the movements of the handle 13.

17 18 and 19 indicate leads which are adapted to provide the electrical operation of 'the apparatus, these leads being shown as part oiu a three-phase electrical system.

b', b2 and b designate contacts with which the conductors l5 and 15*L are t lap led to cooperate; these contacts may be consid* ered as the selecting and locking contacts.

c, c', at and c3 indicate contacts which are also adapted to cooperate with the conductors 15 and 15a as well as conductors 15 and 15C; these contacts may be considered as the motor circuit contacts. Contacts and 52 are permanently connected by a fixed conductor h* while contacts c and c are connccted by a, fixed conductor c4. 'T he conductor 15 is formed to provide a constant contact engagement with Contact o', and also to have contact engagement with contact Y) when moved a suit-able distance in one direction, this latter contact engagen'ient acting to bridge the contacts b andb; this conductor also, upon further movement iii the saine direction, will provide contact engagement with the Contact c2, in which position, this conductor is in contact engagement with each ot' these contacts. Conductor 15a is in permanent contact engagement with the contact b2, and is formed to provide contact engagement with contact Zr when the handle 13 hasbeen moved in the opppsite direction a suitable distance, thus bridging contacts of and N; this (mmluctor, upoii continuation oi its movement in the saine direction is adapted to provide contact engagenient with contact c. thus forming a conductor in contact engagement with contacts b2, o and c. Conductor 15b operates only in connection with contacts c and c', being adapted to bridge these contacts when the conductor 15 is in contact engagement `.vith contact c2; conductor 15 cooperates with contacts c2 and c acting` to bridge these contacts wlien conductor lo is in Contact engagement with contact c.

(l, f, (Z2 and Il indicate contacts adapted to cooperate with contact members c and c carried by the scale beam, the contacts d' and (Z3 being connected by a fixed conductor rl", while contacts (l and (Z are adapted to be bridged by member c, and the contacts d: and oli b v the contact member c.

20 and 21 designati soleiioids, each having pivotally mounted lingers forming latches` the core ot' solenoid 20 carrying an upper linger 20u and a lower linger 20"; the, fingers ol the core oi solenoid 21 ai'e correspondingly iinlicated at 2l and 21". rl'hc lingers 2U and 21 are adapted to coperatc with the shoulders 11') and 12 respectively, these lingers lying in the path ot travel ot these shoulders when the soleiioids are inactive, and acting as stop or latch members to prevent movement- 'ot' the handle 13 beyond a fixed distance. The fingers Q0 and 21h are adapted to coact with the shoulders 11 and 12a. The lingers 20 and 21 are so arranged that when a solenoid is energized, its particular linger 20 or 21L will be withdrawn from the path of travel oi its cooperating shoulder to permit of a further movementoi the member 11 iii the same. direction, this movement oi the member being continued until the other linger oi the ener- ;.mid solenoid engages with its .cooperative shoulder. For instance, it' the solenoid 2() be energized`I the movement ot' the solenoid core upwardly will move the finger 20 out oi' the path ot travel ot the shoulder 11", while at the same time, the linger 20" will be moved to a position where it will engage the shoulder 11 when the latter has moved to proper position under the actuation of the handle, the engagement ot' the linger 20 with the shoulder 11a locking the handle against return movement, this locking engagement being retained until the circuit is brohen through the solenoid, whereupon the solenoid core drops, releasing the. finger 20" and moving the finger 20 into the path o'l shoulder 1l", the member 11 being returned to normal position through the action of the springs 14. The relative positions ot' the lingers 20 and 21 and shoulders l1h and 121 are such that the handle may move a distance suilicient to bridge contacts and or and L" depending upon the direction ot movement of the handle. In Fig. 1, the solenoid 20 is shown in its denergized position` while solenoid 21 is shown as energized, the latter being shown in the position it would assume when handle 13 is moved toward the right, this solenoid 2l being normally .in the position sliowii b v solenoid 20.

, The various circuit connections for the solenoids, are as follows: They lead 17 is connected` to contact b; contact is lconnected Vto contact C2`through leads f, f/-connected to'binding posts of the solenoid 20, and contact 07,3 is connected to the line lead 19. Contact 'b3 is connected to contact (Z through solenoid 2 1 by leads g and V It being assumed `that the scale beam is in itsl lower position with the contact member e bridging contacts Z2 and d3, the following operations take nplace when'it is desired to energize the. solenoids. Should the operator move the handle toward the right of Fig. 1, 1t

a. suiiicient movement will be had to bridge contacts b2 and b3 before the latch 2la engages lshoulder 12b, it being understood that b oth solenoids are denergized, and that the y latch-es of solenoid 21 are in the/same relative pdsitions as the latchs'of the solenoid 20. -VVhile'these two \contacts lare thus bridged by the conductor it will be found that the circuit through solenoid 21 "remains broken because ofr thelgap between the con-- tacts d andd ofthe'scale beam, and since lthe solenoid 21l isA not energized, further movement in that direction by the handle is effectively prevented. The operator then swings the handle toward the left, the result being that 'the conductor 15 bridges contacts yb and J; 'since the-gap between contacts cl2 andy cl3 is` bridged by contactv member ci, the circuit through solenoid 2O is completed r through lead 17, contact b', conductor 15, contacto, lead f., solenoid 20, lead f,co'ntact d2, contact member e, contact da, to lead 19.` The solenoidis thus energized, removing the iinger @L out of the path ot shoulder 11b f permitting. the member 11 to continue its movement a distance sufficient to provide f venlliagement of finger 29" with 'shoulder 11 (the position of solenoid 21 in Fig. 1) this "position willibe maintained until the circuit lis broken through the solenoid by `raising the scale beaniA so as to form a gaplbetween contacts J2 and da, whereupon the parts ot' the switch mechanism will return to normal position.

During 'the additional movement ci the handle to provide the latch engagement of iinger 20", 'the conductors 15 and 15b pass into'co'ntact engagement with contacts c, c

4and c2 resulting in completing the motor circuit, this circuit'being completed through lead 17, contact if, 'conductor 15co-ntact c2, lead h, to binding post m of'e motor 30; lead 18 beingi connected to contact c3, this particular lead will have its circuit to the motor completed through conductor et, con tact c, conductor 15", contact c, and lead i, to bindingpost m of the motor; lead 19 is connected Ito the motor through binding post m2. 'As a` result, as soon as the handle is .moved a sufficient distance to lock it by the latch 2Gb; tliemotr. circuit will bedcombridging this gap, the solenoid 21 maybe energized by swinging the handle 13 toward the right, the solenoid circuit being completed trom lead 1'?, contact b, conductor b4, contact b2, conductor 15a, contact b3,'lead g', solenoid 21, lead g2, contacta?, contact member e, contact (Z, conductor d4, contact Zto lead 19, thus energizing solenoid 21, releasing the latch 2l and permitting the member 11 to continue a movement sufficient to latch it by the latch 21", this movement causing conductors 15a and 15c to have contact engagement with contacts 0'-, c2 and c3, and thus completing the motor circuit as follows: lead 17, contact b', conductor b4, contact Z22, conductor 15, contact c', lead L to' binding post m of the motor; lead 18, contact c3, conductor 150, contact c2, 'lead h to binding post m the lead 19 being connected to the binding post me. As will be seen, this particular circuit is the reverse of that which was provided when the lever was moved to ,the left; and as a result, the motor v3() will travel in theopposite direction resulting in .moving the weight w outwardly until bal-` ance is restored, whereupon the contact member c 1s moved to break the solenoid circuit at contacts Z and d, denergizing the solenoid 21 to permit the handle to resume its normal positionwwhich movement results f in breaking/the motor circuit.

As will be readily understood, this general arrangement provides for a succession ofA operations which follows the usual loadwith the weighing operationtaking place before and after discharge ofthe load.

Assuming the weight 'w to be at the right of the scale beam and with the beam bal- 'ing and unloading operations ot' a.load,

anced through the absence of a loadgthe.A

placing of aY load on the scale a, will cause the beam to rise and bridge the gap between contacts d and d', placing the apparatus in condition for weighing the load. Should the operator attempt to throw the handle toward the left, the latch 20'Ll will prevent a. complete movement through failure of the solenoid 20 to be energized, as heretofore enplained; he then moves the handle to the right, c omph1 tes the motor circuit which then, through. its connections with the weight, moves the weight outwardly on the scale beam until a state of balance is reached, thus breaking the solenoid and motor circuits and stopping the weight in this position. It' all the load now removed from the scale, the scale beam will drop, bridging the contacts (72 and d permitting the proper solenoid and motor circuits to be completed to provide a movement ot the weight in the opposite direction. As will be obvious, this movement ot the handle is limited to one direction, viz., a direction to more the weight to balanced position. li' but a part of the load is removed, the return movement of the weight will be but a partial distance, so that the difference in read4 ings ot the two positions of the weight will indicate the weight oll the material which was taken vtrom the load.

The particular structure ot the scale beam so tar as heretofore referred to, is shown more particularly in Figs. 3, 4, 5, and G in which the beam is shown as formed with a channel 3l through which extends a threaded rod held against endwise movement. Said rod extends past the knife edge balance point and. is provided with a wheel 34. forming a drive wheel tor the rod, the driving action being obtained from a wheel 35 mounted ou the shaft ot motor 30, the driving connection between the wheels 35 and 32 being through an idler 36 carried by a rocker frame 37, said frame having an arm 3S connected to the core oi a solenoid 3S), said iframe being pivotally supported in such manner that idler 3G will be brought into frictional contact with the wheels 3l: and when the solenoid is energized and the arm 3S raised; disengagement of the idler from said wheels is provided by a spring 40 connecting the arm 3S with the scale beam, the purpose being to provide for a rapid movement to destroy the trictional engagementwhen the circuit is broken through the solenoid. The object of this is to prevent over-running of the weight by the kinetic energy of the motor after the circuit through the motor has been broken. rThis over-running` oi' the weight is further prevented by the use ot brake shoes 4l which are adapted to contact with the periphery oi" wheel 3l, these slices being` held under tension by a spring 42 connecting them, the result being that breaking` of the circuit through the solenoid and the motor acts to stop rotation of the rod 32 and' consequently retains the weight a: (which is threaded on the rod) in proper position.

As will be obvious, a completion of the circuit through the motor and through the solenoid 39 causes the motor to begin rotation (the direction being determined by the connections of leads `it and iff), and energizes solenoid 39 bringing the idler 36 into trictional engagement with the wheels 34e and 35, thereby rotating the rod 32 and threading ythe weight fw lengthwise of the scale beam depending upon the direction of rotation of theA rod.

The contacts d, (Z, (Z2 and (Z3 are carried by a bracket 43, as indica ted in Figs. 3 and fi, these contacts being preferably yieldably mounted to insure proper contact engagement and prevent injury thereto during the n'loveinent ofthe scale beam. l`o prevent excessive movement ot' the beam, the bracket @t3 is provided with a recess into which a projection t5 on theend of the scale bcan'i extends, this projection being adapted to Contact with faces at opposite extremes ot its movement. The contact members c and c' are carried by the scale beam and insulated therefrom so as to make the proper contact engagement with their respective contacts, the pairs of contacts being preferably arranged side by side as shown in Fig. 3.

As will be readily understood, this particular construction and arrangement of the scale beam provides for substantially automatic, accurate and el'licient wei\ ,'hingaction by means ot-which the arious weightscan be readily determined. The weighing operation is provided by a single lever, the movement oi" which has the ctii'ect to carry Tie i .'r o i to a: otter o itl we ght t om ne o iti in i i' 1 the scale beam, the mechanism beingso arranged that the operator is unable to provide this movement in any but the proper direction, thus providing for simple manipn` lation but in al manner which renders possibility of error in this respect impossible. However, the present invention is designed to also decrease the possibility of computation errors, and to provide this, additional mechanism is provided by means oit which the readings of the scale are dispensed with and a record automatically made ot the weighing operations, this being provided by a mechanism presently described.

As heretofore pointed out, the principal information desired in operations sach as above referred to in connection with the n'ianutacture of gas, is the weight of the material which is actually employed; in other words, the weight of the material whih is placed in the retorts. To obtain this, we employ -a registering mechanism, and, it' desired, a recording mechanism ior recording the record of the registering mechamsm.

In view of the fact that the essential record is the weight ot' the material which is used, we arrange the operating connections between the traveling weight and the registering mechanism in such manner that the change of the weight :from one position to anotherin one direction only actnates the registering mechanism, thus enabling the use of an accumulatino counter which registers "the individual accumulations so that at the ist end of any desired period, the difference between the first and last registration will indicate the totality of net weights during the period. To provide this result, the following mechanism is employed.

P designates a registering counter of any preferred construction having a' shaft p adapted, when moved in one direction, to actuate the counting mechanism, said shaft being adapted to be driven by a suitable gear 50 by means of ratchet mechanism more particularly shown in Figs. 7 and 8, said gear being operatively connected with a gear 51 driven by the threaded rod 32, the gear connections being so arranged that the rotation of the rod to move the'weight along the-= rod causes the counting mechanism to be actuated in correspondence with the travel of the weight to indicate pound by pound changes in position in the proper direction of movement of the weight.

' The ratchet mechanism includes a ratchet wheel 52 carried by the shaft, a pawl 53 adapted to travel with the gear 50, a second ratchet wheel 54 also carried by the shaft, and a second pawl 55 carried by the framework of the machine, it being understood that the pawls are adapted to be held in engagement with the ratchet wheel by springs or other suitable means. By this construction, it will be readily understood that as the gear 50 is drivenby the threaded rod, the rot-ation of the gear, if the'direction of travel be as shown by the arrow in Fig. 8, will cause a rotation of the shaft p through the action of the pawl 58, the pawl 55 riding over the ratchet teeth of wheeli during this movement. When the direction of rotation of the gear is reversed, the pawl 53 will ride on the ratchet teeth of wheel 52 and pawl 55 will act to retain the counting mechanism against return movement through its engagement with a tooth of wheel 54. ln this manner, the travel of the weight in one direction will actuate the counting mechanism while its movement in the opposite direction will e .ineffective to change the registration record.

By employing a recordingmechanism indicated conventionally at R in Figs. 3 and 4, the reading of the counter may be transferred to a record element such as a disk GO Whichmay be actuated by clock train G1,

said disk having a path of movement under! lying the registering mechanism whereby it can be brou -ht into contact with the registering disks y the use of a hammer (52 adapted to be actuated by a solenoid `structure 63; an inking ribbon 64 may be ernployed for producing the record on tne disk. lf the disk 60 be provided with divisions representing time, it will be readily understood that when the solenoid (S3 is actuated,K

the registered amount will not only be stamped upon the disk (i0, but the time of stamping will be indicated by reason of the travel of the disk 4placing the time indication at vthe proper position, thus not only securing a record ofthe weighing operations,

but also a record of the time when these opera-- tions take place, so that an inspection of the'4 disk will show' the time when-the retorts were successively charged, as well as the. amount of material which was charged at f the time, this amount being ascertained by computing the difference amount registered in the preceding operation and the registry of the amount forming the charge.

In View of the fact that although the between the A travelof the weight w is rapid, due to the motor operation, it will be understood that the particular structural connection between the motor and the threaded rod 32 is such that the movement of the weight ceases with the breaking of the motor circuit, so that liability of over-running by the weigh-t is practically eliminated, the result being thatl the` position of the weight at the breaking of the motor circuit is an accurate representation of the weight of the load. --This fact is also important in connection with the registering mechanism, in that the instant stopping of the movement of the threaded rod results in"preventing excessive movement of the counting mechanism, so that an accurate registration is had.` This fact enablesv the use of more compact registration mechanism inasmuch as a question of 'overrunning need not be considered.

Assuming that the apparatus disclosed' herein is installed for'the purpose of providing an accurate record of the weight 'of the materialv being charged to the gas retorts during a predetermined period, the operation would be as follows, it being assumed that aprevious charge has been registered and that the receptacle for the material (coal)may notybe entirely emptied.

by the preceding charge so that the tare Weight includes not only the receptacle but also the remaining coal4 from the previous charge; under such assumption thel weight` the handle 13, the movement of which is limited toward the right in Fig. 1 through the inability of movement to the left by reason of the latch 20, thereby completing the motor circuit through the operations heretofore described, starting the4 motor and bringing the idler 36 into engagement with wheels`34 and 35' through the operation of the individual charge the solenoid 39, the result being that. the weight zu is moved outwardly toward the end of the beam until balance is obtained, whereupon the circuit is broken through the movement of the contact member e out of engagement with contacts cl and d. lun ving this outward movement, the rotanon 0i' the rod 32 .is ineiiective on the counting mechanism by reason of the fact that the pawl 53 rides on the teeth of ratchet wheel 52, pawl 55v retaining the counting mechanism against return movement. The dis tance traveled by the weight in Changing from one position to the other is imn'laterial, since the amount of coal added to the tare weight is iimnaterial. Obviously, the disengagement of the idler 3G lfrom. contact with wheel Si. in connection with the braking etiect of theshoes il, has positioned the weight w at the proper point where it is retained from change by reason ot the frictional engagement oil the wheel 3i and shoes l-i. The receptacle is then moved to the retort and the latter charged, after which it is `returned to the scale, with the uncharged coal therein.

inasmuch as the weight w was in balance with the heavier load, the lighter load will be-.i -inable to raise the beam from its lower position with the contact member c in contact engagement with the contacts d2', d3. Consequently, one of the gai'is of the motor circuit is bridged, making it possible to energize a solenoid and thus close the motor circuit. lVith the apparatus in this condi tion, the operator then moves the handle in the direction opposite to that previously employed (movement in the same direction being' ln'evcuted as heretofore explained), thus energizing the solenoid 2() and closing the motor circuit to drive the motor in the opposite direction. the result being that the weight in will be moved inwardlv until the beam again assumesa lailanced condition when the circuit is broken through the breaking of the contact engagement between contact melnberc and contacts d, d. ',ilhis inward tra vel oil the weight, due. to the rotati-on ot the rod 52 in the opposite direc tion, has caused the' shaft y) to be acluatcd through the drive eugagen'ie'nt ot the pawl 53 with ratchet and since the counting mechanism has a s viicln'onmis relation with the movcnuint ol the weight In to translate the moven'ient ot the weight in a pound Jfor pound manner, the counting mechanism will be moved to add the translated weight to the previous accumulations, with the result that an inspection of the counting mechanism will disclose an amount representing the totality ot individual countiiigs provided by successive charges, th amount o'i' Iinst made being readily ascertained by comparing the registered amount with thc preceding record.

lit the recording mechanism is cnuiloyed,

the amount appearing on the countiiu),- reg-- ister will be recorded on the disk GG by manipulating the hammer 62, thus providing a printed indication of the .state oit' 4the registe' at this time, and if the disk is a time-controlled one, the position of the record 'will be at the proper time indicated on the disk 60. if the disk be adapted to provide a record for a period of say twentyfour hours, said disk will,.upon removal; disclose the relative times within that period when the retorts were charged, and contain records which will enable a ready computation to be had of the amount of each individual charge, and by comparing the record of the first and last charges, the difference will indicate the total net weight of the coal charge during the entire period or' twenty-four hours.

its heretofore referred to, the j n'inting action of the hammer G2 is provided by a solenoid G3. This print-ing action may be provided by the. use of a button in the sole noid circuit, it being understood that the hammer is manipulated only after the count-- ing mechanism has been moved to register the net weightof the charge. However, we prefer to provide this action aiiton'iatically in order to include it in the automatic action controlled by the manipulation or' the handle 13, and for this purpose, suitable onncctions may be provided, such for instance, as disclosed in Fig. 1,- in which is disclosed a contact o located in the path of movenient of a projecting portion 15X of the conductor l5, said contact being connected to the solenoid through a lead s, the opposite lead for the solenoid indicated. at a, tapping the lead g2. This arrangement causes the circuit for solenoid G3 to become momentarily energized during the `period when the weight w is traveling outward,

a direction in. which the counting mecha-y nism is inactive; during this outward movement, 'the contact member e'is bridging the g: p between contacts Z and d". ln this manner, the Iactuation of the counting mecha nisin will take place dining the n'iovemenrl ot the wcightfn one direct-ion, while the recording oi' the registered amount will take place dming the movement of the weight in the pposi'te direction, thus placing the registcrng and recording operations Subject. entirely to the manipulation of the handle 13 so that the entire operation 01"' weighing, registering and record ig is entirely separated from the control of the operator, whose functions are limited to manipulating the handle i3 at the proper time and inthe manner ierein set forth.

will be imdcrstood7 the movements oi' the Handle .i3 to provide the active positions oiA the circuit malte and break devices, represented by the conductors l5, I5, ll and aisance er' 415 and the contacts with which they are I adaptedrto coperate, are in opposite directions in `providing for the net Weight regisn tration, these movements being limited to these directions by theingers 2Oa and 2l, these vlingers becoming i alternately inactive Vwhen the scale beam shifts from one exl vtreme to the other of its movement. These beam movements representz'fload variations in opposite directions, as, for instance, where the sequencev of load voperations provides fweighing of the gross load, followed by a Iremoval of the desired portion of the load, 'then Weighing the tare load followed by augmenting the supply and thus increasing the load to the gross Weight of the succeeding load; this sequence causes the weight travel to register the difference in weights and thus record the' net weight. Should, however, this sequence be changed, as by removing a portion of the load, then Weigh- Iing the tare,\folloived by removing an additional amount of the load (effecting load variations successively in the same direction), the direction of movement of the circuit'makeand break devices to activity Would be successively in the same. direction, since the scale beam would return toits former position after the second unloading operation. It will be clear, howeventhat no particular advantage is obtained by pro- .vidin'g such' intermediate weighing operation, so far as net weight registration is concerned, the net Weight of the load being that of the load variations in opposite directions.

What we claim s:-

1. In weighing mechanism, a scale beam, permanently free to move to balance a weight shiftable thereon, an electric moto-r for shifting the weight, switch mechanism Within the motor'circuit for controlling the activity of the motor,and means for controlling the movements of the switch mechanism to close the motor circuit .and including an auxiliary circuit havingxed contacts in the path of movement of the scale beam.

2. In Weighing mechanism, a scale beam, permanently ree to move to balance a weight shiiftable thereon, an electric motor for shifting the weight, vswitch mechanism within the motor circuit for controlling the activity `oi" the'motor, and means for controlling the movements of the switch mechanism to close the motor circuit and including an -auxiliary circuit having fixed contacts in the path of movement of'y .the scale beam,

said' switch mechanism being operative to` control the direction of movement of the motor, whereby the' Weight is shiftable to provide gross and tare weights from a single point. Y

3. In weighing-mechanism, a scale beam, permanently lfree tov move to balance weight shiftable thereon, an electric motor for shitting the Weight, switch mechanism,

within the .motor circuit for controlling the activity of the motor, means'for controlling the movements of the switch mechanism to close the motor circuit and including an auxiliary circuit having iixed contacts in the path of movement of the scale beam, said-y switch mechanism including 'a pivoted handie having a normal position, and circuit make and break devices movable with said handle, the operation of said devicesbeing dependent upon the position of the scale l beam relative to said contacts.

4l. ln Weighing mechanism, a scale beam, permanently free to move to balance a nf'eight shiftable thereon, an electric motor for shifting the weight, and switch mechanism within the motor circuit for control-v ling the activity of the motor, and means for controlling the movements of the switch mechanism to close the motor circuit and including an auxiliary circuit having xed' contacts in the path of movement of the scale. beam, said switchmechanism including movable circuit make and break devices, the operation of said devices being dependent upon the position of the scale beam relative to said contacts.

5. In weighing mechanism, a scale beam, permanently free to move to balance `a Weight shiftable thereon, an electric motor for shifting the weight, and switch mechanism witliinthe motor circuit for controlling the activity of the motor, and means for controlling the movements of the switch mechanism to 'close the motor circuit and including. an auxiliary circuithaving fixed contacts in the path of movement of the scale beam, said switch mechanism including movable circuit make and break devices, the operation of said Idevices being dependent upon the position of the scale'beam relative 'to said contacts, the movement of said devices scale'beam, said switch mechanism including i movable circuit make and break devices, the operation ot said devicesrbeing dependent upon the position of the scale beam relative to said contacts, the movement of said devices in one direction being controlled by the movements ofthe scale beam.

7; lin weighing mechanism, a scale beam,y

permanently tree to move. to balance a weight shiftable thereon, an electric motor for shifting the weight; and switch mechaero nism within the motor circuit for controllingv the activity of the motor, and means tor controlling the movements oi' the switch mechanism to'close the motor circuit and including an auxiliary circuit having,l tixed contacts in the path ot' moveinent of the scale beam, said switch mechanism including movable circuit make and break devices, the operation ot said devices being,` dependent upon the position of the scale beam relative to said contacts, the movement oil. said devices in one direction beingat will, the movement in the opposite direction being controlled by ,movements of the scale beam.

S. .ln weighingmechanism, a scale beam, permanently free to move to balance a weight shit'table thereon, an electric motor for shitting the 'vveig'hh and. switch mechanisin within the motor circuit tor controllint,y the activity oi the motor, and means tor controlling` the movements -oit the switch mechanism to close the motor circuit and including an auxiliary circuit having fixed contacts in. the path of movement oi the scale beam, said switch mechanism ii'icluding;r circuit make and break devices movable from inactive to active positions at will, said movements being controlledby the positions of the scale beam relative to said contact.

1n weighing mechanism, a scale beam, a weigln'; shii'table thereon, an electric motor for shifting the weight, switch mechanism within the motor circuit for controlling the activity of the motor, said switch mechanism including circuit make and break devices movable from inactive to active positions at will, and means whereby the direction of said movements are controlled by the position of the scale beam, said means including `mechanism tor controlling the .length of travel of the devices.

10. 1n weighing` mechanism, a scale beam, a weight shittable thereon, an electric motor for shifting the weight, switch mechanism within the motor circuit for controlling;r the activity of the motor, said switch mechanism including circuit. make and break devices movable from inactive to active positions at will, means whereby said movements are controlled by 'the positions ot the scale beam, and means ior temporarily retaining said devices in thci active positions.

lll. In weighing mechanism, a scale beam, a weight s hittable thereon, aii electric motor for shitting the weight, switch mechanism within the motor circuit for controlling the activity ot the motor, said switch mechanism including"*scircuit make and break devices movable from inactive toactive positions at will, moven'ient-controlling mechanism t'or said devices,` and means whereby the activity oi said latter mechanism is dependent upon the position of the scale beam.

l2. In weighing;r mechanism, a scale beam,

a weight shiitable thereon, an electric motor for shifting the weight, switch mechanism. within the motor circuit for controlling the activity of the motor, said switch mechanism including circuit make and break devices movable from inactive to active positions at will, movement-controlling mechanism for said devices, and means whereby the time o't activity ot said devices is controlled by the positions of the scale beam, the duration of activity being controlled by movements ci? the beam from such positions.

13. 1n 'weighing mechanism, a scale beam, a weight shittable thereon, an electric motor for shitting the weight, switch. mechanism within the motor circuit tor controlling the activity oi' the motor-,said switch mechanism including circuit .make and break devices movable in opposite directions to activity from a neutral point ot inactivity, and means whereby the direction of movement of the devices is controlled by the position oif the beam.

let. In weighingmechanism, a scale beam, a weight shiittable thereon, an electric motor for shifting' the weight, switch mechanism within the motor circuit t'or controlling the activity 0i the motor, said switch mechanisn'i including circuit make and break devices movable in opposite directions to activity from a neutral point of inactivity,l and means under the control oi? the scale beam for pre venting successive movements ci the d vices in the same direction 'from the neutral under load variations in opposite directions.

15. ln weighing mechanism, a scale beam, a weight shiftable thereon, an electric motor for shifting the weight, switch mechanism within the motor circuit tor controlling the activity oi" the motor, said-switch mechanisin including,` circuit make and break devices movable in opposite directions to ac- -tivity from a neutral point ot in activity, and means for selectively fleterniinii'ig;` the direction of such movement and controlled by the scale beam.

lo. ln weighing; mechanism, a scale beam, a weight shittable thereon, an electric motor i'oi' shittingthe weight, switch mechanism within the motor circuit for controllii'ig` the activity ol` the motor, said switch mechanism including circuit n'fake and break devices movablc in opposite directions to activity Jfrom a neutral point oi inactivity, and means for selectively determining the direction ot such movement and controlled by the scale beam, said means preventing,r successive movements of the devices in the saine. direction from the neutral under load variations in ol'iposite directions.

" El. In weighing mechanism, a scale beam,

a. weight shiftablc thereon, an electric motor tor shitting; the weight, switch mechanism within the motor circuit for controlling the activity of the motor, said. switch mechaposition.

i8. ln weighing mechanism, a scale beam, Ia weight shilital'ile thereon, an electric motor for shitting the weight, switch mechanismwithin the motor lcircuit for controlling the activity of the motor, said switch niechan ism inclnding` circuit make and break dcvice-s movable in opposite directions to activity lfrom a. neutral point of inactivity,

and nieans'for selectiveiy determiningthe i direction ct' siich moven'ient and controlled hy the scale beam, said latter means including inciting mechanismy for temporariliy .retaining said devices in' the selected active position, and means whereby said locking mechanism is rendered inactive hy the balancing movements ci" the scale benin.

19. ln weighing mechanism, a scale beam, a weight shiftahle thereon, an electric motor for shitting the weight, switch -mechaiiisni Within the motor circuit for controlling the activity ofA the motor, said switch mechanism including circuit make and break dcvices movable in opposite directions to activity troni a neutral point of inactivity, and means for selectively determining' the direction ot such movement and controlled by the.

scale beam, said latter means including independent'latch elements adapted to be rendered active or inactive hv the nioveii'icnts ci said devices. 4

.$30. ln weighing mechanism, a scale beam, a weight shiftahle thereon, an electric motor lfor shifting the weight. switch mechanism Within the .motor circuit for controlling the activity oi the motor, said switch niechanisin including` circiiit make and break devices n'iovahle in opposite directions to tivity vfrom a neutral point of inactivity, and means for selectively determining the 4direction of such movement and controlled hy the scale heain, said latter means includin@ independent latch elements adapted to he rendered active or inactive by the move ments ot said devices, the activity ci' said hitch. elements heinenon-concurrent when the is in c. .reine ci" its move.- nient.

In weighing mechanism, a scale beam, weight shiflahlo thereon, an electric motor tor shitting the weight, switch mechanism within the .motor circuit for controlling the gictivity of the motor, said switch mechanism including circuit ineke and break devices movable in opposite directions to ;ictiyityfrom a neutral point oil inactivity, land @ineens for selectively determining the ili'rcc sea es tion of siicli movement and controlled by t e serle heani, said means includingV indetion of such movement and controlled by the scale beam, said means including independent latch mechanisms normally active during device-inactivity `and adapted to be rendered inactive by movements of said devices to activity, and means whereby the inictivity of the latch mechanism is dependent upon the position of the scalel beam.

ln weighing nicchanisn'i, a scale beam,y

a weight shiftable thereon, an electric motor iciL shitting the weight, switch ineclianisin within the motor circnit for controlling the activity ot the inotoi. said switch mecha.- nisn'i including` circuit make and break devices movable in opposite directions to activity fronia neutral point oi iinictivityl,V

means `tor selectively determining the direction of suoli movement and controlled by the scale beam, said means including inde-pend ent latch incclninisins normally active during device-inactivity and adapted to be rendered inactive by movements of said devices to activity,-aiid means whereby said scale beam controls the inactivity of said latch mechanisms.

24. ln weighing mechanism, a scale beam, a weight sliiitable thereon, an electric motor for shitting' the weight, switch mecha,- nism within the. motor circuit 'for controlling; the activity ot the motor, said switch mechanism including' circuit malte and break devices movable, in opposite directions to activity from a neutral point ot inactiv ity, means for selectively determining),` the direction ot such movement and controlled by the scale beam, said means including inl dependent latch mechanisms normally ac-V tive during deviceinactivity and adapted .to he rendered inactive by movement ot said devices to activity, and means whereby said scale beam controls the inactivity of said` latch mechanisms, the position of the beam selcctiiig'the latch mechanism to be rendered inactive.

25. In weighing mechanism, a scale bcani, a. weight shiftalole thereon, an electric motor for shifting the weight, switch mechanism within the'niotor circuit for controlling the activity of the motor, said switch mechanism including circuit make and break de tions at will, means whereby said movements are controlled by the positions of the scale beam, normally inactive means for latching said devices in their active ositions, and means whereby said latcliing means are rendered active by movements of the devices to activity, and said latching means being rendered inactive by movement oi the scale beam to balancingposition.

27. In weighing mechanism, a scale beam','

a weight shi'ltable thereon, anelectric motor tor shifting the weight, switch mechanism within the motor-circuit for controlling the activity of the motor, said switch mechanism including circuit make and break devices movable in opposite directions to activity from a neutral point of inactivity, independent normally inactive latch mechanisms adapted to temporarily retain said devices active, and means whereby said latch mechanisms are rendered selectively active by movements of the devices to active position, said latter means being controlled to the scale beam.

28. In weighing mechanism, a scale beam, a weight shit'table thereon, an electric motor for shifting the weight, switch mechanism within the motor circuit for controlling the activity of the motor, said switch mechanism including circuit mak l and break devices movable in opposite directions to actii ity from a neutral point ot' inactivity,independent normally.inactive latch mechanisms adapted to temporarily retain said devices active, and means whereby said latch mechanisms are rendered selectively active by movements o'l the devices to active position, said latter means being controlled by the scale beam, a selected latch mechanism beving rendered inactive by movements of the beam to balancing position.

2i). In weighing mechanism, a scale beam, a weight shittable thereon, an electric motor for shifting the weight, switch mechanism within the motor circuit t'or controlling the activity ot' the motor, said switch mechanism including circuit make and break devices movable from inactive to active positions at will, and latch mechanism for controlling such movements of the devices and such active positions, said latch mechanismv including a normally active element for controlling thelength of device-movement and a normally inactive element adapted to retain the devicein active position, and means whereby said latter element is rendered active solely when the movement-limiting element is inactive. 4 h

30. In weighing mechanism, a scale beam, a weight shiftable thereon, an electric motor vfor shifting the Weight, switch mechanism within the motor circuit for controlling the activity of the motor, said switch mechanism including circuit makel and break devices movable from inactive to active positions at will, and latch mechanism for controlling such movements of the devices and for tcmporarily retaining the devices in such act-ive positions, said latch mechanism including a normally active element for controlling the length of ldevice-movement and a normally inactive element adapted to retain the device in active position, and means whereby said latter element is rendered active solely when the movement-limiting element is inactive, the shifting movements of said elements be ing in unison.

31. In weighing mechanism, a scale beam..

a weight shiftable thereon, an electric motor for shifting the weight, switch mechanism within the motor circuit ior controlling the activity of the motor, said switch mechanism including circuit make and break devices movable in opposite directions to activity from a neutral point oi inactivity, and independent latch mechanisms lor selectively controlling the direction and length of device-movement and for te1n1' oi'a1i.ly retaining the devices in activity, each latch mechanism including a normally active element for controlling the length ot' device movement and a normally inactive element adapted to retain the device in active position, and

means whereby said latter element is rendered active solely when the movement-limiting element is inactive, the shifting movements ot' the elements being in unison.

32. In weighing mechanism, a. scale beam,

a weight shiftable thereon. an electric motorI 115 for shifting the weight, switch mechanism within the motor circuit for controlling the activity of the 1notor,said switch mechanism including circuit4 make and break devices movable in opposite directions to activity from a neutral point of inactivity, and independent latch mechanisms for selectively controlling the direction and length of device-movement and for temporarlly retaining the devices in activity, each latch mechanism including a normally acti ve element t'or controlling the length of device movement and a normally inactive element adapted to retain the device in active position. means whereby said latter element is rendered acl lse tive solely when the movement-limiting element is inactive, the shitting movements ci the elements being in unison, and means whereby the selection of latch mechanism element-shifting activity is controlled by pcsitions of the scale beam.

33. In weighing mechanism, a scale beam, av weight shiftable thereon, an electric motor for shifting the Weight, switch mechanism within the motor circuit for controlling the activity of the motor, said switch mechanism including circuit make and break devices movable in opposite directions to activity 'from a neutral point ci' inactivity, and independent latch mechanisms for selectively controlling the direction and length of device-movement and for temporarily retaininO' the devices in activity, each latch mechanism including a normally active element for controlling the'lengih of device movement ande normally inactive element adapted to retain' the 'device in active position, means whereby said latter element is rendered fictive solely when the movement-limiting element is inactive, the shitting movements of the elements being in unison, and Ineens whereby the beam positions at the cpposite extremes of beam movement select the ltch mechanism to be rendered active for element shifting", the movement ci the beam to balancing position rendering the selected mechanism inactive.

34. ln weighing mechanism a scale beam, a Weight shittable thereon, an electric motor for shifting tneweight, switch mechanism within the motor circuit Jfor controlling the activity of the motor, said switch mechanism including circuit make and break devices for the. motor circuit, said devices being normally inactive and comprising movable and stationary elements and means for controlling the movements of the movable elements tc complete and maintain the motor cii'cuit, said scale beam having make end break connections in the circuit to determine the activity of said latter ineens.

35. lnweighing mechanism, a seele beeni, a weight shifteble thereon, an electric motor for shifting the weight, switch mechanism within the motor circuit for controlling the activity of the motor, aid switch mechanism includingY movable 'and stationary elements forming circuit make and breath devices within the 'motor circuit, seid move-.blc ele-- ments being normally inactive and movable in opposite directions te activity from a neu-l trai point ci inactivity at will, ineens for controlling the direction ci movement ot' the movable elements, scid lutter means also acting tc Atenfiporarily retain tlercircuit malte l, and breek devices in activity, and means whereby the activity of said lauter means is controlled by theposition of the scale beam.

36. inA weighing mechanism, a seele beam, c weight shittabletherecn, an electric motor .one direction, the connections for shifting the weight, switch mechanism within the motor circuit if'or controlling the activity ct the motor, said switch mechanism including' movable and stationary elements forming make und break devices tot' the mctcr circuit, said movable elements being ncrniully inactive and movable from a position oi" inactivity in'opposite directions .at will, and latch mechanism. controlled by the positions and movements of thescale beam for Selecting the direction of i'novement ciE the movable elenients temporarily umiiituining the circuit completed, said latter mechanism including a member movable with the, movable elements and having' shoulders, and electiicallycontrolled latching members adapted to cooperate with said shoulders for 'lccking said member to prevent movements of the moi/sole element in one direction to complete the motor circuit or to permit such movement and to temporarily retain the .mo-

tor circuit completed.

ln computing weighing' mechanism, a scale beam, a weight shiitable thereon, means shitting said weight in opposite directions to .prei/ide .ter gross und ijf-.ire weight balancing cperaticns, a manual contzcl for heginni the weighing operations, id

88. ln computing" weighing mechanismen balancing scale beam including,l a shiiitahle.

weight, motor-operated ineens 'i'or shifting" the weight, switch mechanism for conticl ling` the time and direction ci movements of said mean." Lcans under the control ci the scale beam i i limiting the operation the switch nie `nisin to movements providing shifting et the weight in the direction to balance the beam, and computing-g mechanism operatively connected to said shifting; means for erin@A the travel mit' weight in one diie on. 3'. in computing weighing balancing' scale beam including :i s. weight, motor-operated means cw el lc'lit, switch mechanism r c time and direction ci movements under the control ci Liiig the operations movements Y in the di -J .ci/ini, computing mecln ly cennecteiito seid shii'tii isterinc the travel of. the

means end the computing mechanism loci adapted to translate Vthe travel movement" ci the Weight into weight umts ci' measurel i nient.

l 40. In computing weighing mechanism, a

weight, motor-operated means for shifting the weight, switch mechanism for controlling the time and direction of movements of said means, means under the control of the scale beam for limiting the operations of the switch mechanism to movements providing shitting of the weight in the direction to balance the beam, and computing mechanism operatively connected to saidlshfting means tor registering the travel et the weight. in one direction, said 4weight shitting means also including a threaded rod for moving the weight, said rod being geared to the computing mechanism to operatively drive said mechanism in one direction and run free with respect vthereto in the opposite direction.

all. In weighing mechanism, a balancing scale beam including a shiftable weight, a rotatable member by which said weight is shifted, power-operated means for rotating said member at will, and mechanism between said means and said member for operatively connecting` them at will and tor automatically disconnecting them when the beam is balanced, said mechanism including means for braking said member to prevent weight over-running, whereby over-running of the power mechanism will be ineffective to shift the weight.

42. In weighing mechanism, a. balancing scale beam including a shiftable weight, a rotatable member by which said weight is shifted, power-operated means for rotating Said member at will, a manual control for beginning the weighing operations, said control being operatively connected to the scale beam to permit operation solely when the beam is in a predetermined position, and mechanism between said means and said member for operatively connecting them at will, said latter mechanism including a shiftable member movable into and out of operative engagement with the power means and rotatable member, and means whereby the movement of said shiftable member is controlled by the position of the scale beam.

43. In weighing mechanism, a balancing scale beam including a 'shiftable weight, a rotatable member by which said weight is shifted, power-operated means for rotating said member at will, and mechanism between said means and said member for operatively connecting them at will, said latter mechaniSm including a shiftable member movable into and out of operative engagement with the power means and rotatable member. and

means whereby the movement of said shittable member is controlled by the position of the scale beam, and also including brake mechanism adapted to prevent overrunning of the rotatable member when the sliiftable member is disengaged.

4i. In weighing mechanism, a balancing scale beam including a shittable weight and a threaded rod operatively connected to and adapted to shift said weight, an electric motor and its circuit, circuit make and break devices within the circuit to make the circuit at will and automatically breali; it under movements of the scale beam, a. manual control for beginning the weighing` operations, said control being operatively connected to the scale bea-m to permit operations solely when the beam is in a predetermined position, and a normally inactive shit'table member adapted to operatively engage and disengage said motor -and said threaded rod, the movement oi the shiitable member to such engagen'ientbeing dependent upon the completion ot' the motor circuit through Said devices.

In a weighing' n'icclianism, ay balancing scale beam including a shittable weight and a threaded rod operatively connected to and adapted to shift said weight, an electric motor and its circuit, circuit make and break devices within the circuit to make the circuit at will and automatically break it under movements of the scale beam, a manual control for beginningthe weighing operations, said control being operatively connected to the scale beam to permit operations solely when the beam is in a predetermined position. and a normally inactive sliiftable member adapted to operatively engage and disengage said motor and said threaded rod, the moveuient ot' the shiftablc member to such engagement beingT dependent upon. the completion ot' the motor circuit through said devices, the disengagement being coincident with the break ot said circuit.

lo. In weighing mecl'ianism., a balancing scale beam. including a shiitahle weight and a threaded rod operatively,connected to and adapted to shift said weight, an electric motor and its circuit. circuit make and break devices within the circuit to make the circuit at will and automatically break it under movements of the scale beam, and a normally inactive shiittable member adapted to operatively engage and disengage said motor and said threaded. rod, means whereby the movement of the shittable member to such engagement and its maintenance in engage-- ment is dependent upon the completion of the motor circuit through said devices, the disengagement being coincident with the break of said circuit, and brake mechanism cooperating 'with said thrzfaded member to prevent over-runnin;r ot the weight when disengagement is had. l

ll?, In computingY weighing mechanism, a balancing` scale beam including a shittable poise, a motor for shiftingv Athe poise in either direction, nechanism for controllingr the direction of movement of the motor,

operation of the recording mechanism by the controlling mechanism.

48. In computing Weighing` mechanism a balancing' scale beam including a shiftable poise, a motor for sluiting the poise in either direction, mechanism for controlling the direction of movement of vthe motor, computing weighing mechanism correlated with the poise-moving means to register the movements of theV poise in one direction, and mechanism for recordingr the registered Weight, said mechanism including means for actuating the recording' mechanism and for controlling the operation of the recording,r mechanism by the controlling.;` mechanism.

49. In computing Weighing' mechanism, a balancing' scale beam including a shii'table Weight, a motor for shifting1 the Weight in either direction, mechanism for controlling the movements of the motor, computing` mechanism adapted to register the movements of the Weight in one direction, and mechanism for recordingthe registered Weight, said controlling mechanism being adapted to control the activity of 'said recording'mechanism, said recording mechanism being active during' the movement or' the Weight inthe opposite direction.

t 50. ln Weighing' mechanism, a balancing scale beam including; a shit-table poise, a

[SEAL] Corrections in Letters Fatemi No. M 56,864.

It is hereby certified that in Letters Patent No. L, granted October motor for shiftingthe poise in either direction, and switch mechanism within the niotor circuit for controlling the activity of the motor, said switch mechanism including circuit iiiake-and-break ldevices under.

the control oi' the scale beam and movable in a plurality of directions from inactive to active positions at will to control the direction of poise travel, said device and the beam control including' means for automatically selecting,T the direction of device movement to cause the poise to travel toward the,

point Aof balance.

51.' In Weighing` mechanism, a balancing scale beam including a shiftable poise a motor for shitting the poise in either direction, and switch mechanism Within the motor circuit for controlling the activity7 of the ino-- ilVitnesses 1 W. G. DooLrrrLn, F. E. Garrnnn,

i915, 'upon the' application of Henry A. Carpenter andArthur W. vVierner, of S'ewicldey, Pennsylvania, for an improvement in Computing Weighing Apparatus, errors appear in the printed specicatin requiring correction as follows; ige 7, lines` 3'7, 48, 63, 79, 94, '110,` and 127, page 8, line '15,' claims 1-8, after the Word beam strike out the comma; page Fl', lines 38, 49, 64, 8), 95, 11,1, and 128,l page i 8, line 16,*claims l-S, after the Word balance insert a comma; and that the said Letters Patent should be read with these corrections therein that the same mav conform to the record of the case inthe Patent Office.

Signed land sealed this 18th day of January, A.. D., i916.

J." T. NEWTON,

Acting Commissioner of Patents. 

